mirror of
https://github.com/wiltodelta/remove-ai-watermarks.git
synced 2026-10-14 21:40:47 +02:00
Victor Kuznetsov
5c6588b3ef
Repair image and metadata publication contracts, detection routing, research artifact validation, release verification, and the published agent skill. Refresh the dependency lock and reconcile documentation with verified behavior. Add regression coverage and record the completed audit and corrected VideoSeal measurements. Preserve the existing Accelerate and Lightning versions. Validation: Ruff and Pyright pass; 2358 tests pass with 3 skipped. The maintenance gate exits 2 on the documented Accelerate and Lightning security findings.
35 lines
1.2 KiB
Python
35 lines
1.2 KiB
Python
"""Pure text-normalization helpers shared by evaluation scripts."""
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from __future__ import annotations
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import unicodedata
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def normalize_text(text: str) -> str:
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"""Normalize text for layout-independent evaluation comparisons."""
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return "".join(unicodedata.normalize("NFC", text).casefold().split())
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def levenshtein_normalized(left: str, right: str) -> float:
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"""Return Levenshtein distance divided by the longer input length (not CER)."""
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if not left and not right:
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return 0.0
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previous = list(range(len(right) + 1))
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for left_index, left_character in enumerate(left, start=1):
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current = [left_index]
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for right_index, right_character in enumerate(right, start=1):
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current.append(
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min(
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current[-1] + 1,
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previous[right_index] + 1,
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previous[right_index - 1] + (left_character != right_character),
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)
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)
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previous = current
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return previous[-1] / max(len(left), len(right))
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def normalized_edit_distance(left: str, right: str) -> float:
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"""Normalize text, then return Levenshtein distance over the result."""
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return levenshtein_normalized(normalize_text(left), normalize_text(right))
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